Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Disk Imaging Calculation - How long should it take?

Posted on 2013-11-14
8
Medium Priority
?
47 Views
Last Modified: 2016-05-13
I've been searching for some way to calculate expected disk imaging durations but I can't find anything useful. Here's my scenario:

Mac OS X image = 16.5 GB
One (1) Client NIC = 1 Gbps
Imaging server (Deploy Studio) NIC = 1 Gbps

I would like to come up with a formula for determining what the duration should be for this one client. Then I would like to be able to add clients and see how it affects the duration.

Thanks,
-mike
0
Comment
Question by:ascendmax26
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
8 Comments
 
LVL 32

Expert Comment

by:_
ID: 39649794
1 gig nics help, but the time it will take depends more on Sustained Throughput of the slowest storage device you are using.
The type of devices and how they are connected, will also have some impact.

ex: in the same system, using 2 IDE drives on the same channel (cable) will not be as good as 2 IDE drives on different channels (cables).
0
 

Author Comment

by:ascendmax26
ID: 39649810
Thanks for the input, cora147. I assume some sort of disk I/O factor - both from the client and server sides - will be part of the equation. Network throughput is only part of the picture.
0
 
LVL 32

Expert Comment

by:_
ID: 39649900
With the 1gig nics, it (disk I/O) will probably be the biggest part. It's a fairly straight forward math problem.

Just don't forget to crank up Performance Monitor and get some real time numbers. Just to see how much (if any) lag the systems add to the situation.
What you "actually" get, doesn't always match what you "should" get according to the numbers, but you can include a "fudge" that will keep you close enough.

Have fun.   : )
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 

Author Comment

by:ascendmax26
ID: 39662395
Doesn't sound like anyone has calculations I can use. I'm putting together my own and will share for input.
0
 
LVL 32

Accepted Solution

by:
_ earned 2000 total points
ID: 39663102
That's because there isn't one. It always depends on the system being used.

The main factors you need are
- file size
- listed drive i/o sustained speed
- then any "channel" limitation (IDE, SATA, SCSI, NETWORK, etc) that might come into play.

And since the actual numbers are not usually as good as the Theoretical Numbers, you need to run some actual tests to figure the "fudge" factor for that machine.

If doing a bunch of systems, that is a pita though, so as a "Rule of Thumb" I figure anything over 75% of the above TN, is good. Anything under, I might want to look into.
But that's just my little cheat.
0
 
LVL 32

Expert Comment

by:_
ID: 41594387
Thank you much.     : )
0

Featured Post

[Webinar] Lessons on Recovering from Petya

Skyport is working hard to help customers recover from recent attacks, like the Petya worm. This work has brought to light some important lessons. New malware attacks like this can take down your entire environment. Learn from others mistakes on how to prevent Petya like worms.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Moving your enterprise fax infrastructure from in-house fax machines and servers to the cloud makes sense — from both an efficiency and productivity standpoint. But does migrating to a cloud fax solution mean you will no longer be able to send or re…
A professional opinion on which Apple product to buy, and a tidbit about the WWDC.
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

719 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question